Onyx Slots Sister Site

Onyx Slots, a online casino hosted by the Grace Media Limited platform, operates alongside several other sister sites.

Breakdown of Onyx Slots

Current Promotion

Onyx Slots

Bonus: Wager Free Spins Welcome Package

Promotions: no wager bonus

Free Spins: 50 Bonus Spins

Games Applicable: Big Bass Bonanza

Wager Requirement: None

licensed by: UKGC

Minimum Deposit: £10

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Onyx Slots Terms and Conditions: New Customers Only. $/€/£10 Min. Deposit and Wager. 20 Free Spins will be allocated for each of your first 5 deposits of $/€/£10 or more. Bonus valid 48 hours from receipt. Max conversion: $/€/£100. Withdrawal requests void all active/pending bonuses. Full terms apply 18+ T&C's | BeGambleAware® #AD.

Siter Sites hosted by Grace Media Limited

Hotstreak Casino

Deposit £20 & Get 100 No Wager Free Spins

Is Licensed By: UKGC

terms and conditions

First deposit only. Min deposit £20. Min wager £20 on slots. Max 100 free spins. Max one claim. Spin credited within 7 days after deposit. Spins valid on Big Bass Splash. Spin Value 10p . Full T&Cs Apply 18+

Vegas Wins Casino

Welcome Bonus up to £500

Is Licensed By: UKGC

terms and conditions

New players only, First 3 deposits only. Min deposit £10. Max total bonus £500 and 150 spins. 30x wagering (dep + bonus). 30x on spins, 4x conversion, bonus and spins valid on selected slots. T&C’s appl

Cosmic Spins Casino

100% up to £100 Welcome Match Deposit Bonus

Is Licensed By: UKGC

terms and conditions

First deposit only. Min deposit £10. 100% Bonus Match on 1st deposit, max £100 bonus; 100 bonus spins on Starburst. 40x wagering(dep+bonus). 40x on spins, 4x conversion, bonus valid on selected slots. Full T&Cs apply. #AD, 18+ only, begambleaware.org

Pros

Video Slots featured at Onyx Slots as of July 2025

Disco Danny Slot

Disco Danny Slot

Step back into the groovy 1970s and hit the disco floor, where flashing lights, funky moves, and exciting features await. This slot brings serious energy—and the chance for some of the biggest payouts—right there on the dance floor. Let’s hit the floor and spin for those bonus features!

Disco Danny Slot Features:

Features
  • Free Spins
  • Scatter Symbols
  • Multipliers
Type
  • Theme: Classic
  • Volatility: High
Stats
  • Release Date: 2020-11-01
  • RTP (Return to Players): 96.04%
  • Reels: 3
  • Min Bet: 0.10£
  • Max Bet: 75£ (in UK 5£)
  • Provider: NetEnt

Hall of Gods

Hall of Gods

Hall of Gods is a legendary Norse mythology-themed slot from NetEnt that immerses players in a world of gods, dragons, and epic treasures. Featuring 5 reels and 20 paylines, the game includes expanding wilds, a bonus game, and free spins. Its standout feature is the progressive jackpot, offering the chance to win life-changing prizes. With stunning visuals and atmospheric sound design, Hall of Gods delivers a powerful and immersive gaming experience.

Hall of Gods Features:

Features
  • Free Spins
  • Wilds
  • Scatter Symbols
  • Autoplay
Type
  • Theme: Modern
  • Game Type: Jackpot Games
  • Game Type: Progressive Jackpots
  • Volatility: Medium
Stats
  • Release Date: 2013-10-01
  • RTP (Return to Players): 96.10%
  • Reels: 5
  • Min Bet: 0.20£
  • Max Bet: 50£ (in UK 5£)
  • Provider: NetEnt
  • Paylines: 20

Whispering Winds Slot

Whispering Winds Slot

Enter the hidden world of ninjas in this Asian-inspired slot, where vibrant visuals and the chance for big payouts come together for an exciting gameplay experience.

Whispering Winds Slot Features:

Features
  • Free Spins
  • Expanding Symbols
  • Scatter Symbols
  • Autoplay
  • Instant Wins
  • Multipliers
  • Mystery Symbols
Type
  • Theme: Modern
  • Volatility: Medium
Stats
  • Release Date: 2024-07-11
  • RTP (Return to Players): 96.23%
  • Reels: 5
  • Min Bet: 0.05£
  • Max Bet: 100£ (in UK 5£)
  • Provider: Play'n GO
  • Paylines: 25

Mega Don Feeding Frenzy

Mega Don Feeding Frenzy

He is back and hungry for fish; this colorful new slot from Play'n GO does have a real bite.

Mega Don Feeding Frenzy Features:

Features
  • Mystery Symbols
  • Expanding Symbols
  • Scatter Symbols
  • Free Spins
  • Autoplay
Type
  • Theme: Modern
  • Volatility: High
Stats
  • Release Date: 2023-01-07
  • RTP (Return to Players): 95%
  • Reels: 5
  • Min Bet: 0.1£
  • Max Bet: 100£ (in UK 5£)
  • Provider: Play'n GO
  • Paylines: 1024

Seregeti Kings Slot

Seregeti Kings Slot

This online slot takes you on a safari through the wilds of Africa, where you’ll come face-to-face with the kings of the savannah, from roaring lions to sleek panthers. With a backdrop set deep in the heart of the savannah, the game delivers a classic slot experience packed with the potential for big wins, especially when luck is on your side.

Seregeti Kings Slot Features:

Features
  • Free Spins
  • Respins
  • Wilds
  • Multipliers
Type
  • Theme: Modern
  • Volatility: Medium
  • Volatility: High
Stats
  • Release Date: 2020-01-01
  • RTP (Return to Players): 96.7%
  • Reels: 5
  • Min Bet: 0.10£
  • Max Bet: 100£ (in UK 5£)
  • Provider: NetEnt
  • Paylines: 26